Flight
SWA3974 21 Jun 2026
SWA3974, operated by Southwest Airlines, on 21 Jun 2026: Buffalo Niagara International (KBUF) to Denver International (KDEN). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KBUF BUFFALO NIAGARA INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 05:23 EDT |
| Last seen | 06:50 MDT |
| Duration | 3h 26m |
| Aircraft | AC4237 |
| Max altitude | 34,000 ft |
| Distance tracked | 1,177 nm |
Punctuality, last 30 days
| Flights | 4 |
| On time | 0 (0%) |
| Average delay | +29 min |
| Worst delay | +46 min |
In the last 30 days SWA3974 departed on time (within 15 minutes) on 0 of 4 flights (0%), with an average departure delay of +29 min and a worst delay of +46 min.
Schedule, departure and arrival times from the FAA SWIM feed; aircraft, altitude and distance from the PlaneTrack receiver network. On time means a departure within 15 minutes of schedule.